Javascript verification form part 2 _ javascript skills

The second part of the js verification form: JavaScript script, which verifies the data item begin in the form
-------------------------------------------------------------------------------
*/
Function checkForm (objFrm ){
Var len = 0;
Len = objFrm. elements. length;
Var I = 0;
Var objCheck;
// Text box
For (I = 0; I <len; I ++ ){
ObjCheck = objFrm. elements [I];
If (objCheck. type = "text "&&! F_checkTextValid (objCheck )){
Return false;

}
}
// Drop-down list
For (I = 0; I <len; I ++ ){
ObjCheck = objFrm. elements [I];
If (objCheck. type = "select-one "&&! F_checkSelectValid (objCheck )){
Return false;

}
}
// Valid time range
If (f_checkStartAndEndDate (objFrm) = false) return false;
Return true;
}
Function f_checkSelectValid (obj ){
// Alert ("check select ");
If (obj. options. length <= 0 ){
Alert ("no data in the drop-down list! ");
Return false;
}
Return true;
}
Function f_checkStartAndEndDate (frm ){
Var len = frm. elements. length;
If (len = null & len = 0) return true;
Var I = 0;
Var temp;
Var objCheck;
Var objStartDate;
Var objEndDate;
// Alert ("start date period check ");
Try {
For (I = 0; I <len; I ++ ){
ObjCheck = frm. elements [I];
Temp = objCheck. name;
If (temp. indexOf ("startDate")> 0 | temp. indexOf ("beginDate")> 0)
ObjStartDate = objCheck;
If (temp. indexOf ("endDate")> 0)
ObjEndDate = objCheck;
}
// Alert (objStartDate. value );
// Alert (objEndDate. value );
If (objStartDate. value = null | objStartDate. value = "" | objStartDate. value = null | objStartDate. value = ""){
Return true;
}
Return checkTwoDate (objStartDate. value, objEndDate. value );
// Alert ("end date period check ");
} Catch (E ){}
Return true;
}
Function f_checkTextValid (obj ){
// Cannot be blank
If (obj. getAttribute ("isNeed ")! = Null ){
If (f_isNotNull (obj) = false) return false;
}
// The length cannot exceed
If (obj. getAttribute ("maxlength ")! = Null ){
If (f_checkLength (obj) = false) return false;
}
Var checkType = "";
CheckType = obj. getAttribute ("checkType ");
If (checkType = null | checkType = "") return true;
//
If (checkType. indexOf ("number")> = 0 ){
If (f_isNumber (obj) = false) return false;
If (f_checkNumType (obj, checkType) = false) return false;
}
//
If (checkType. indexOf ("positive")> = 0 ){
If (f_isNumber (obj) = false) return false;
If (f_isPositive (obj) = false) return false;
If (f_checkNumType (obj, checkType) = false) return false;
}
If (checkType. indexOf ("date")> = 0 ){
If (f_checkDate (obj) = false) return false;
}
/*
Switch (checkType ){
Case "number": if (f_isNumber (obj) = false) return false; break;
Case "date": if (f_checkDate (obj) = false) return false; break;
Default:
}
*/
Return true;
}
Function f_isNotNull (obj ){
If (obj. value = ""){
F_alert (obj, "null value is not allowed! ");
Return false;
}
Return true;
}
Function f_isNumber (obj ){
If (isNaN (obj. value )){
F_alert (obj, "Value Type ");
Return false;

}
Return true;
}
Function f_checkDate (obj ){
If (checkDate (obj. value) = false ){
F_alert (obj, "the date format is not legal! ");
Return false;

}
Return true;
}
Function f_checkLength (obj ){
If (getTotalBytes (obj)> Math. abs (obj. getAttribute ("maxlength "))){
F_alert (obj, "exceeds the length limit! ");
Return false;

}
Return true;
}
Function f_alert (obj, alertStr ){
Var fielName = obj. getAttribute ("fieldName ");
If (fielName = null)
FielName = "";
Alert (fielName + "\ n" + alertStr );
Obj. select ();
Obj. focus ();
}
Function f_checkNumType (obj, numType ){
// Assume that the numeric type has been determined.
Var strTemp;
Var numpric;
Var numLen;
Var strArr;
Var defaultLen = 19;
Var defapripric = 5;
Try {
If (numType = null | numType = "") return f_checkNumLenPrec (obj, defaultLen, defaultpric );
If (numType. indexOf ("(") <0 | numType. indexOf (")") <0) return f_checkNumLenPrec (obj, defaultLen, defapripric );
StrTemp = numType. substr (numType. indexOf ("(") + 1, numType. indexOf (")")-numType. indexOf ("(")-1 );
If (strTemp = null | strTemp = "") return f_checkNumLenPrec (obj, defaultLen, defapripric );
StrArr = strTemp. split (",");
NumLen = Math. abs (strArr [0]);
Numpric = Math. abs (strArr [1]);
Return f_checkNumLenPrec (obj, numLen, numpric );
} Catch (e ){
Alert ("in f_checkNumType =" + e );
Return f_checkNumLenPrec (obj, defaultLen, defapripric );
}
}
Function f_checkNumLenPrec (obj, len, pric ){
Var numReg;
Var value = obj. value;
Var strValueTemp, strInt, strDec;
// Alert (value + "=" + len + "=" + pric );
Try {

NumReg =/[\-]/;
StrValueTemp = value. replace (numReg ,"");
StrValueTemp = strValueTemp. replace (numReg ,"");
// Integer
If (pric = 0 ){
NumReg =/[\.]/;
// Alert (numReg. test (value ));
If (numReg. test (value) = true ){
F_alert (obj, "the input must be of the integer type! ");
Return false;
}

}
If (strValueTemp. indexOf (".") <0 ){
// Alert ("lennth =" + strValueTemp );

If (strValueTemp. length> (len-pric )){
F_alert (obj, "the integer cannot exceed" + (len-pric) + "bit ");
Return false;
}
} Else {
StrInt = strValueTemp. substr (0, strValueTemp. indexOf ("."));

// Alert ("lennth =" + strInt );

If (strInt. length> (len-pric )){
F_alert (obj, "the integer cannot exceed" + (len-pric) + "bit ");
Return false;
}

StrDec = strValueTemp. substr (strValueTemp. indexOf (".") + 1), strValueTemp. length );

// Alert ("pric =" + strDec );

If (strDec. length> pric ){
F_alert (obj, "the decimal point cannot exceed" + pric + "bit ");
Return false;
}

}
Return true;
} Catch (e ){
Alert ("in f_checkNumLenPrec =" + e );
Return false;
}
}
Function f_isPositive (obj ){
Var numReg =/[\-]/;
If (numReg. test (obj. value) = true ){
F_alert (obj, "must be a positive number! ");
Return false;
}
Return true;
}

/*
Function selectedCheckboxCount (form)
Function Description: counts the optional items in the Form.
Parameter description:
Form: the specified form.
*/
Function selectedCheckboxCount (form ){
Var length = 0;
Var I = 0;
Var count = 0;
Eles = form. elements;
While (I Obj = eles. item (I );
// Type = obj. attributes. item ("type"). nodeValue;
Type = obj. type;
If (type = "checkbox "){
If (obj. checked ){
Count ++;
}
}
I ++;
}
Return count;
}
// Get the byte length
Function getByteLen (str)
{
Var l = str. length;
Var n = l;
For (var I = 0; I If (str. charCodeAt (I) <0 | str. charCodeAt (I)> 255)
N = n + 1;
Return n
}
/*
Note:
1. Clear data in the table (0.0 and 0)
2. If no data exists in the cell, a space is automatically added.
3. Clear the checkbox of the blank row
Parameters:
Clearzero: whether to clear "0", "0.0", false not clear, true clear (true by default)
Tablename: name of the table to be cleared. The default value is sortTable.
*/
Function clear_table (clearzero, tablename)
{
Var tobject;
If (tablename = null)
Tobject = gmobj ("sortTable ");
Else
Tobject = gmobj (tablename );
// If the table is not defined, no filtering is performed.
If (tobject = null)
Return;

// If the function call parameter is null, the values 0 and 0.0 are to be cleared. Otherwise, the values 0 and 0.0 are not cleared.
Var clear = (clearzero = null )? True: clearzero;
// Clear 0 and 0.0 and fill in spaces
Var rows = tobject. rows;
Var j = 0;
For (var I = 0; I {
// Obtain the clear attribute of the first cell. If it is 1, the row has no data, and all data of the row is cleared.
While (tobject. rows [I]. cells [j]! = Null)
{
If (clear)
{
If (tobject. rows [I]. cells [j]. innerHTML = 0 | tobject. rows [I]. cells [j]. innerHTML = 0.0 | tobject. rows [I]. cells [j]. innerHTML = "")
Tobject. rows [I]. cells [j]. innerText = "";
}
Else
{
If (tobject. rows [I]. cells [j]. innerHTML = "")
Tobject. rows [I]. cells [j]. innerText = "";
}
J ++;
}
J = 0;
}
Return true;
}
Function gmobj (mtxt)/* Get object by object name */
{
If (document. getElementById ){
M = document. getElementById (mtxt );
} Else if (document. all ){
M = document. all [mtxt];
} Else if (document. layers ){
M = document. layers [mtxt];
}
Return m;
}
/*
-------------------------------------------------------------------------------
Description: it is a JavaScript script that verifies the end Of the data item in the form.
-------------------------------------------------------------------------------
*/
/*
Purpose: Check whether the input string is in decimal number format. It can be a negative number (and meets the specified precision)
Input: str: String
L: Total digits
D: number of digits after the decimal point
Return Value:
If the verification succeeds, true is returned. Otherwise, false is returned.
*/
Function isDecimal (str, l, d ){
If (isInteger (str )){
If (l = null) return true;
If (str <0) l --;
If (str. length <= l) return true;
}
Var re =/^ [-] {0, 1} (\ d +) [\.] + (\ d +) $ /;
If (re. test (str )){
If (l = null) return true;
If (d = null) d = 0;
If (RegExp. $1 = 0 & RegExp. $2 = 0) return false;
If (RegExp. $1. length + RegExp. $2. length <= l
& Amp; RegExp. $2. length <= d) return true;
}
Return false;
}
Onclick = "isNull ('co. PageForm. competitorname ');"
Co -- refers to PageForm -- refers to formName CompetitorName -- refers to the text column name.